If you want to block tracking might consider
https://www.ghostery.com/en/
Originally Posted by
JoeKayaker
I had a rather disconcerting experience with united.com recently. I was wondering if others had seen it.
I was looking for flights to HNL and did a search while logged into united.com. I did not search on any other websites, no kayak, no expedia, and no other airlines. I did not google hotels, flights or anything else in HNL. I did not e-mail anything which referenced Honolulu. The next day I was getting on-line ads from Alaska Air for flights to HNL.
I thought this was odd, and just to make sure, I did a search on united.com to LHR. I was especially careful to make sure I did not reference London anywhere else on-line. Sure enough, I started getting ads from American for flights to London.
I can only conclude that someone it sifting through the cookies united stores on my computer and is targeting ads based on them. (Partly because I can't believe that united would sell my searches for incremental revenue - they would not want to invite competition like that).
Not sure if its loose security on the part of united.com or my browser settings - either way I find it creepy.